Apparatus for grinding and smoothing glass.



G. LARDINOIS.

APPARATUS FOR GRINDING AND smoomme GLASS. APPLIOATION FILED JAN. 6,1909.

9 995,019. Patented June 13, 1911.

3 SHEETS-SHEET 1.

INVENTOR, WWNESsES: GE RQE LARmNols,

Attorney.

G. LARDINOIS. APPARATUS FOR GRINDING AND SMOOTHING GLASS.

APPLICATION FILED JAN.6.1909.

Patented June 13,1911.

3 SHEETS-SHEET 2L lNVENTQ R, LARnmms,

y MWSQMMJ A't'l: orvmy,

w'n- ES'SES;

R5 ca, vasumamu, n. c.

G. LARDINO IS.

APPARATUS FOR GRINDING AND SMOOTHING GLASS.

APPLICATION FILED JAN. 6, 1909.

995,019; Patented June 13,1911.

3 SHEETS-SHEET 3.

'F' (X A A AL AA i'lllllllllllllllllllllllllllllifimanhlllllllllllllllll? \IlllllllllllllIf lllli L I II Vllll I I v I I llllllllll [I :j

/L 1 I AT. A |||1 I TI )NVENTOR, Gamers LARDINOIS,

Attorney.

rm: "cams PETERS col. WASHINGTON 04 c FFTGE.

GEORGE LARDINDIS, OF BRUSSELS, BELGIUlVL APPARATUS FOR GRINDING ANDSMOOTHING GLASS.

Specification of Letters Patent.

Original application filed October 15, 1907, Serial No. 397,571.

Serial No. 470,971.

Patented June 13, 1911.

Divided and this application filed January 6,

To all whom it may concern:

Be it known that I, GEORGE Lnnnrnols, a subject of the King of Belgium,residing and having a post-ofiice addressat 1915 Rue des Palais,Brussels, Belgium, have invented a new and useful Improvement inApparatus for Grinding and Smoothing Glass; and I do hereby declare thefollowing to be a full, clear, and exact description of the same.

The present application is a division of my application, Serial No.397,571, filed Oct. 15, 1907, for Letters Patent of the United States.

In my application Serial No. 897,571, filed October 15, 1907, forLetters Patent of the United States, I have described a method forgrinding and smoothing glass, wherein the polishing material ispumice-stone and the rubbing plates are made of wood, cork, ebonite,vulcanized caoutchouc, hard felt, hard cardboard, or the like, or ofpumicestone cut into the form of plates, or pieces of pumice-stoneagglomerated into the form of plates.

This invention relates to an apparatus for practicing this method. Thisapparatus is illustrated in the accompanying drawings.

Figure 1 represents an elevation of one form of the apparatus, and Figs.2 and 3 are plans respectively of two forms of the rubber. Figs. 4 and 5show in elevation and in plan respectively a modification of themachine.

A is the table which may serve of course for the preliminary grindingprovided the apparatus is so constructed as to allow either the lowerpart, that is to say the table properly so called, or the upper partcarrying the rubber, to be exchanged for other parts.

B is the rubber. It is of a diameter somewhat greater than that of thetable and is mounted eccentrically in relation to the table. It turns inthe direction the reverse of that in which the table turns.

The table is turned by means of the bevel gear CD or by any othersuitable transmission gear. The rubber is turned through a drivingpulley E or by gearing, the arrangement being such that the tablerotates at a speed five times that of the rubber.

The rubber B carries plates, p, 39 p made of wood or other appropriatesubstance. These plates are mounted within or are fixed to toothedwheels r 7 W, the func tion of which is periodically to rotate theplates. This rotation is effected by a pinion F driven in any suitablemanner and engaging with the outer toothed wheels 1 at every rotation ofthe rubber.

R is a receiver containing water charged with washed pumice-stone whichflows through pipes (1 extending through the holes in the rubber B so asto deliver pumice-stone and water 011 to the glass.

The periodic rotation of the rubbing plates, the object of which is toavoid the accumulation of the pumice-stone at certain parts of thetable, may be brought about in several ways. For instance in Fig. 8toothed wheels are not used, instead a roller F acts by friction on theplates of the rubber B which plates are in cont-act with each other andthus transfer the rotation produced by the roller F by its action on theouter plates to the inner plates. The plates are kept in contact witheach other by springs or contained in bearings 0 carried by arms 6 inwhich bearings the plates 6 can slide. The plates are preferably all ofthe same diameter.

In the modification shown in Figs. 4 and 5 there are three rubbers, B, BB each of diameter smaller than that of the table. The number three isonly selected as an example. In this arrangement the principal rubber Bshould have a diameter greater than half the diameter of the table andshould be eccentric in relation to the latter. The periodic rotation isin this case also obtained either by friction or through gear wheels ashas been explained in regard to the preceding form.

Having now particularly described and ascertained the nature of my saidinvention and in what manner the same is to be performed, I declare thatwhat I claim is 1. Apparatus for smoothing glass, comprising, incombination, a rotatable table, a rubber having a diameter greater thanthat of the table and mounted eccentrically to the latter. transmissiongear for driving the rubber in the direction the reverse of that inwhich the table rotates, rubbing plates, carried by said rubber, toothedwheels, to which the rubbing plates are fixed, and a pinion adapted toengage said toothed wheels at intervals to impart to the rubbing platesa periodic rotation, independently of the ro-- tation of the table andrubber, substantially as described.

2. Apparatus for smoothing glass having a rotatable table, a rubber of adiameter different from that of the table, and mounted eccentrically tothe table, transmission gear for driving said rubber in the directionthe reverse of that in which the table rotates, rubbing plates carriedby said rubber, and means for imparting a periodic rotation to therubbing plates independently of the r0- tation of the table and rubbers,substantially as described.

3. Apparatus for smoothing glass having a rotatable table a rubber of adiameter difl'erent from that of the table, and mounted eccentrically tothe table, transmission 15 gear for driving said rubber in the directionthe reverse of that in which the table rotates, inner and outer rubbingplates carried by said rubber, the inner rubbing plate being in drivingengagement With the corresponding 20 Copies of this patent may beobtained for five cents each, by addressing the Commissioner of Patents,Washington, D. C.

my. i r

